Lansinoh Breastmilk Storage Bags, Easy to Use Milk Storage Bags for Breastfeeding, Presterilized, Hygienically Doubled-Sealed, for Refrigeration and Freezing (pack of 25)*SUPER STRONG Designed with double sealed side seams and a double zipper to protect and freeze breastmilk *SAFE BREASTMILK STORAGE Our storage bags are presterilized and BPA BPS free with a tamper evident, fully sealed tear away top for safety *SAVE TIME Pump directly into the bags using your Lansinoh pump or most major pump brands using our Lansinoh pump into bag adapter (sold separately) *EASY TO USE Each bag has a large write on label at the top